FIELD: radio engineering.
SUBSTANCE: antenna switch includes the following: module of power amplifier with antenna port (1) connected to antenna, and at least one input port connected to section of transmitter of transmitter-receiver (5); module of input cascades, which is connected to antenna port and receiving section of transmitter-receiver; at that, the above module of power amplifier and the above module of input of cascades are capable of covering some number of frequency bands. Function of duplex transmitting/receiving mode is obtained by installation of circulators (6,7) or power dividers. Antenna switch proposes compact solution for use of four GSM bands and eight WCDMA bands in one and the same phone.
EFFECT: multi-band antenna switch only with one radio module requiring only small number of power amplifiers.
12 cl, 3 dwg
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